Hash Generator (MD5 / SHA-256 / SHA-512)

Generate hashes for text instantly — single or bulk. Copy or download results.
All Tools
Algorithm
Tip: Use SHA-256 or SHA-512 for modern applications. MD5 is best kept for legacy checksums, not security.
Output format
Trimming removes accidental spaces/newlines at start/end.
Bulk hashing
One item per line. Each line becomes one hash output line.
Limit: 2000 lines

What is a Hash Generator?

A hash generator converts text into a fixed-length value (a “hash”) using algorithms like MD5, SHA-256, or SHA-512. Hashes are commonly used to verify data integrity, compare values, detect changes, and store secrets safely (with proper password hashing techniques).

Hashing is a one-way operation: the same input always produces the same output, but the output cannot be reliably reversed into the original text. This makes hashing useful for verification and integrity checks where you do not want to store or transmit the original input.

MD5 vs SHA-256 vs SHA-512

  • MD5: very fast but considered weak for security. Use only for legacy checksums or non-security comparisons.
  • SHA-256: modern, widely used, and suitable for integrity checks, signatures, and many security workflows.
  • SHA-512: stronger and longer output than SHA-256; useful when you want a larger digest.

Common uses for hashes

  • Verifying file or text integrity (detecting changes or corruption)
  • Comparing data quickly without storing the original value
  • Generating consistent fingerprints for caching and deduplication
  • Validating payloads in APIs (together with secrets and signing)
  • Security workflows (use dedicated password hashing like Argon2/bcrypt for passwords)

Frequently Asked Questions (FAQ)

1. What is hashing?

Hashing converts input data into a fixed-length output that represents the original data.

2. Is hashing the same as encryption?

No. Encryption is reversible with a key, while hashing is designed to be one-way.

3. Can a hash be reversed back to the original text?

Not reliably. Hashing is not intended to be reversible.

4. Is MD5 safe to use?

MD5 is not recommended for security. Use SHA-256 or SHA-512 instead.

5. Why do two different texts sometimes match the same hash?

That is called a collision. Strong algorithms make collisions extremely unlikely.

6. Why does trimming matter?

Extra spaces or newlines change the hash. Trimming helps avoid accidental mismatches.

7. Can I hash passwords with SHA-256?

For real password storage, use Argon2 or bcrypt. SHA alone is not ideal for password hashing.

8. Does this tool store my input?

No. Hashing runs locally in your browser and nothing is stored or sent.

9. Can I generate hashes in bulk?

Yes. Paste one item per line to generate a matching list of hashes.

10. When should I choose SHA-512?

Choose SHA-512 when you prefer a longer digest or stronger margin, especially for integrity and signatures.

Quick tips
Hashes are deterministic: same input → same output. Even a single character change creates a totally different hash.
For passwords, prefer dedicated password hashing algorithms (Argon2/bcrypt) with per-user salts.
Examples
Text
hello
Privacy: This tool runs in your browser. Nothing is uploaded.